Smoking pipe



March l?, 1931. G, BRASi-AW 1,796,778

sMoKmCT PIPE Filed Jan. 19. 1928 hlllllllmlllllllz Patented Mar. 17, 1931 UNITED STATES PATENT OFFICE SMGKING PIPE Application filed January 19, 1928.

This invention relates to smoking pipes, and has for its object providing means for preventing objectionable particles from passing through the pipe stem with the smoke to 5 the mouth of the smoker. It has for a iurther object providing means for collecting such particles in the pipe in such a. manner as not to clog up the normal smoke passageway. A `further object is to provide means for simplifying and expediting the cleaning of the pipe when necessary. A further obj eet is to provide means for passing the smoke over or through cotton, or similarly loosely packed material, in order to further remove l undesirable solid particles from the smoke, or for saturating such material with any substances which may be desired by the smoker, such as perfume or the like, and also to provide ior otherwise bringing the smoke in its passage in contact with substances such as crystallized menthol, or the like. Other objects of the invention will be apparent from a consideration of the accompanying drawings andthe following description thereof.

Ot the drawings, Fig. 1 is a central, vertical, sectional view of a pipe which embodies the features of my invention; Fig. 2 is a simil lar sectional view at an angle of ninety degrees to Fig. 1; Fig. 3 is a transverse, sectional view along the line 3 3 ot Fig. 1 Fig. i is a central, vertical, sectional view of a modified form ot a pipe stem; Fig. 5 is a similar sectional view at an angle of ninety degrees to Fig. 1; Fig. 6 is a transverse sectional view along the line 6 6 oit Fig. L1; Fig. 7 is a further modified form; and Fig. 8 is a sectional view along the line 8-8 of Fig. 7.

The pipe 10 which I illustrate as an embodiment of my invention comprises, in this instance, a smoke passageway 11, a chamber 12, a mouth piece 13 having a smoke passageway 14, and a plug 15 which is slidably mounted in the chamber 12 and which is integral with or fixed to the mouth piece 13. 45 The plug 15 has smoke passageways 16 and 18 and what I call expansion chambers 17 and 19.

I provide the expansion chambers in order to assist in removing objectionable solid particles from the tobacco smoke and for other Serial No. 247,834.

reasons hereinafter explained. As the smoke is drawn inwardly by the smoker, the pressure is reduced in the chambers and the air pressure in the pipe bowl chamber forces the smoke through the passageway 11 and, as it passes into the first expansion chamber 17, it expands and its speed is decreased and solid particles contained in the smoke are deposited in this chamber. This is because of the slowing down of the speed of the smoke and, hence, oi its nability to drive the denser particles onwardly through the oriiice 18. Also, eddy currents are set up in the chamber which tend to prevent the denser particles trom getting into the orilicc 18 and, hence, they are deposited in the chamber 17. As the smoke passes through the orilice 18 to the chamber 19, it again expands in the chamber 19 and more of the solid particles are deposited.

In this manner, the smoke in the passageway through the various orifices and chambers relieved substantially entirely of the objectionable solid particles which ordinarily pass to the smokers mouth or are deposited in the smoke passageway. By my method there is less deposit in the normal smoke passageway as it is broken up into short. orifices in which the speed is increased and the main passageways, 1G and 14, receive only thc clean molle. Obviously, the pipe can be used far longer without clogging up, as the clogging substances are deposited in the chambers. Furthermore, the smoke itself which reaches the mouth of the smoker is tree trom the objectionable particles.

TWhile I have, in this instance, illustrated my invention by means of a pipe stein having a straightpassageway, it is to be understood thatcurved passageways could be used. But, with either `type of passageway, the cleaning out of the passageways is not interfered with by the chambers which I provide, because the oriiices 18 are all in line with the passageways and a wire or other cleaning means can be passed through all ot the orilices, substantially as easily as if they were continuous. Furthermore, it .is to be understood that the exact shape or position of the various eXpansicn chambers is not to be limited to the partisular shape or position illustratedL In Figs. l to 6, inclusive, I have illustrated a modified form of the chambers and, in this instance, have shown the plug 25 integral with the mouth piece 26. In Vthis case, the chambers 27 are closed at the lower end. This arrangement produces a result similar to that of the arrangement shown by Figs. l to But, bv this modified fern, means are provided for conveniently inserting in the chambers absorbent cotton. This cotton may be merely to help purify the smoke, or the cotton mav be saturated with any desired liquid, such as perfumery or menthol, or the like. Or crystals of menthol 35, or other substances may be deposited in the chambers. It is sometimes desired to saturate the tobacco to be used in pipes or cigarettes with substances, such as menthol, for use by those who have catarrhal tendencies but this is objectionable for the reason that the menthol is burned instead of evaporated. Vvlhen placed in the chambers I provide, the menthol, or other substances, is merely evaporated and passes unharmed with the smoke to the mouth of the smoker. Y

It will be obvious that either of thesemodiiicaticns may be cleanedby removing the plug from the chamber l2 and using any suitable means for cleaning out the chambers, orifices and passageways. In case of the modifications of Figs. l to 6, the substances, if any, which have been placed in the chambers can be removed and replaced by fresh substances7 as desired. Also, obviously, cotton or other substances may be placed in the chambers of the modiiication of Figs. l to 3, and these chambers maybe very conveniently cleaned.

Figs. .7 and 8 illustrate a further modifica- Y, tion of the pipe stem. yIn this modification the chambers 30' are annular and the orifices 3l are inclined .through the disks 32, which Ymembers 33 which connect the disks. This arrangement provides a circuitous route for the smoke and assists in depositing the solid particles in the chambers. By removing the mouth piece and plug from the stem the chambers and lorifices can beeasily cleaned.

I claim 'as my invention:

l. A smoking device, comprising means for holding the tobacco and a stem therefor, said stem comprising a portion fixed to said holding means and having an .enlarged chamber therein, said stem also comprising a plug mounted in said chamber and a mouthpiece attached to said plug, and said plug having a plurality ofV relatively large transverse chambers therethrough, said stem having a central, longitudinal, straight passageway passing through said fixed portion and mouth piece and through the walls between ysaid transverse Chambers, .the otherwise imperforate.

2. Ak smoking stem having a single, longitudinal, central .smokepassagewayu theresaid walls being hand.

through, and having a plurality of expansion chambers therein opening into said passageway and in line therewith, and havingv a volatile substance mounted in one of said chambers.

3. A smoking device comprising tobacco holding means and a. stem, said stem having a plurality of relatively large transverse chambers, and having a single longitudinal passageway connecting the transverse chambers, said passageway extending through the stem, coa-Xially therewith, and into said holding means, the cross sectional area of each of said transverse chambers being many times as great as the cross sectional area of said longitudinal passageway between the chambers, whereby there will be a material-expansion of the smoke as it passes into the transverse chambers'.

4;. A smoking device comprising a tobacco holder and a stem therefor, said stem having a` single, central, longitudinal smoke passage- ,way therethrough, and having aplurality of relatively large transverse passageways therethrough, said longitudinal passageway being straight and cylindrical and connecteach pair of transverse chambers, the walls between said chambers being-otherwise imperforate.

In testimony whereof, I hereunto set my 'onlinr n. i nnansnaw. 

